package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对前端传递过来的明文密码进行MD5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);//拷贝属性,从dto中拷贝到employee中

        //设置默认密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));//设置密码通过MD5加密
        employee.setStatus(StatusConstant.ENABLE);//设置账户状态1为正常

        /*employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());*/

        //创建人id和修改人id
        //通过同一个线程中的存储空间获取到当前登录人的id

        //这个属于公共字段 已经通过aop处理
        /*employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());*/


        employeeMapper.InsertEmployee(employee);
    }

    @Override
    public PageResult PageAll(EmployeePageQueryDTO employeePageQueryDTO) {
        Integer page = employeePageQueryDTO.getPage();
        Integer pageSize = employeePageQueryDTO.getPageSize();
        String name = employeePageQueryDTO.getName();
        /*//给页面设置初始值
        if(page.equals(0))
        {
            page=1;
        }
        if(pageSize.equals(0))
        {
            pageSize=5;
        }*/

        //1.设置分页参数
        PageHelper.startPage(page, pageSize);
        //2.查询
        List<Employee> list = employeeMapper.list(name);

        //3.强制转换+封装
        Page<Employee> p = (Page<Employee>) list;

        PageResult pageResult = new PageResult(p.getTotal(), p.getResult());
        return pageResult;
    }


    //这里修改的员工状态
    @Override
    public void startOfStop(Integer status, long id) {
        //创建一个员工对象设置参数
        //1.方式一
        /*Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);*/
        //2.方式二利用注解@Builder
        Employee employee=Employee.builder()
                .id(id)
                .status(status)
                .build();
        //调用update方法修改员工账号状态
        employeeMapper.update(employee);
    }


    //根据id查询员工
    @Override
    public Employee searchEmpById(Integer id) {
        Employee employee=employeeMapper.selectEmpById(id);
        //将查询到的加密密码也不给看
        employee.setPassword("****");
        return employee;
    }

    @Override
    public void setEmpById(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        /*employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.update(employee);
    }

}
